feat(derive): Add derive macro for interface

examples/service/char_plan/Cargo.toml

@@ -7,3 +7,7 @@ edition = "2021"
 
 [dependencies]
 char_sdk = { path = "../../../crates/char_sdk" }
+char_sdk_derive = { path = "../../../crates/char_sdk_derive" }
+
+eyre = { workspace = true }
+tokio = { workspace = true }

examples/service/char_plan/src/main.rs

@@ -1,14 +1,42 @@
-struct Run;
-impl char_sdk::Action for Run {}
+use char_sdk_derive::CharAction;
 
+#[derive(CharAction)]
+struct Run;
+
+impl char_sdk::Action for Run {
+    fn action<'a>(&self) -> char_sdk::ActionArgs<'a> {
+        char_sdk::ActionArgs {
+            name: "run",
+            args: vec![char_sdk::ActionArg::Required {
+                name: "profile",
+                description: "which release profile to use, takes ['release', 'test']",
+            }],
+        }
+    }
+
+    fn execute(&self, args: &[&char_sdk::InputArg]) -> eyre::Result<()> {
+        todo!()
+    }
+}
+
+#[derive(CharAction)]
 struct Build;
-impl char_sdk::Action for Build {}
+
+impl char_sdk::Action for Build {
+    fn action<'a>(&self) -> char_sdk::ActionArgs<'a> {
+        todo!()
+    }
+
+    fn execute(&self, args: &[&char_sdk::InputArg]) -> eyre::Result<()> {
+        todo!()
+    }
+}
 
 fn main() {
     char_sdk::CharBuilder::new()
-        .add_context(char_sdk::std::dagger::Context::default())
         .add_action(Run {})
         .add_action(Build {})
+        .add_plugin(char_sdk::std::dagger::Plugin::default())
         .add_plugin(char_sdk::std::k8s::Plugin::default())
         .execute()
         .unwrap();